<template>
  <div class="wrap">
    <div class="nav_left" id="navLeft">
      <div class="nav_content">
        <span :class="{active : cl==index}" v-for="(obj,index) in arr" :key="obj.first_id"
          @click="dian(index)">{{obj.first_name}}</span>
      </div>
    </div>
    <div class="down">
      <i class="iconfont icon-xiajiantoubeifen gray"></i>
    </div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        arr: [{
            first_id: "0",
            first_name: "热门"
          },
          {
            first_id: "621",
            first_name: "\u5496\u5561",
          },
          {
            first_id: "627",
            first_name: "\u996e\u98df",
          },
          {
            first_id: "279",
            first_name: "\u7537\u88c5",
          },
          {
            first_id: "294",
            first_name: "\u5973\u88c5",
          },
          {
            first_id: "122",
            first_name: "\u773c\u955c",
          },
          {
            first_id: "339",
            first_name: "\u5185\u8863\u914d\u9970",
          },
          {
            first_id: "391",
            first_name: "\u6bcd\u5a74",
          },
          {
            first_id: "35",
            first_name: "\u978b\u9774",
          },
          {
            first_id: "39",
            first_name: "\u8fd0\u52a8",
          },
          {
            first_id: "153",
            first_name: "\u7bb1\u5305",
          },
          {
            first_id: "119",
            first_name: "\u7f8e\u5986\u4e2a\u62a4",
          },
          {
            first_id: "355",
            first_name: "\u5bb6\u7eba",
          },
          {
            first_id: "51",
            first_name: "\u9910\u53a8",
          },
          {
            first_id: "334",
            first_name: "\u7535\u5668",
          },
          {
            first_id: "369",
            first_name: "\u5bb6\u88c5",
          },
          {
            first_id: "10",
            first_name: "\u5bb6\u5177",
          },
          {
            first_id: "223",
            first_name: "\u6570\u7801",
          },
          {
            first_id: "429",
            first_name: "\u6c7d\u914d",
          },
          {
            first_id: "546",
            first_name: "\u5065\u5eb7\u4fdd\u5065",
          },
          {
            first_id: "433",
            first_name: "\u5b9a\u5236",
          },
        ],
        cl: 0
      };
    },
    methods: {
      dian(index) {
        this.cl = index
      }
    }

  };
</script>

<style>
  .wrap {
    width: 100%;
    display: flex;
    margin: 0.2rem 0 0 0;
    position: relative;
  }

  /*左侧的导航样式*/
  .nav_left {
    width: 21.1875rem;
    overflow: scroll;
  }

  .nav_left::-webkit-scrollbar {
    display: none;
  }

  .nav_content {
    white-space: nowrap;
    padding: 0 0.7rem;
  }

  .nav_content span {
    display: inline-block;
    padding: 0.4rem 0.6rem;
    font-size: 0.875rem;
  }

  .nav_content .active {
    border-bottom: 2px solid #7f4395;
    color: #7f4395;
  }

  .nav_left,
  .down {
    float: left;
  }

  /*右侧导航部分*/
  .down {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .gray {
    color: gray;
    display: inline-block;
    vertical-align: middle;
  }
</style>